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(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date Χ t it n A t 18 August 2011 (18.08.2011) W O 2 l l / l l A l (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every C09D 11/00 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, (21) International Application Number: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, PCT/US201 1/023882 DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, 7 February 201 1 (07.02.201 1) KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (25) Filing Language: English NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, (26) Publication Language: English SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: 12/705,724 15 February 2010 (15.02.2010) (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant (for all designated States except US): BRADY GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, WORLDWIDE, INC. [US/US]; 6555 West Good Hope ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, Road, Milwaukee, WI 53223 (US). TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, (72) Inventor; and LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, (75) Inventor/ Applicant (for US only): LI, Jieming [CA/US]; SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, 9009 N. White Oak Lane, #307, Bayside, WI 53217 (US). GW, ML, MR, NE, SN, TD, TG). (74) Agent: PLOTECHER, Gary, R.; Whyte Hirschboeck Published: Dudek S.C., 555 East Wells Street, Suite 1900, Milwau kee, WI 53202 (US). — with international search report (Art. 21(3)) 00 00 ¾ (54) Title: SELF-PRIMED COATING FORMULATION AND UNIVERSAL,PRINTABLE,PLASTIC MEDIA COATED WITH THE FORMULATION (57) Abstract: Self-primed, printable formulations comprise: A. A polyurethane binder, B. An absorptive pigment, C. A crosslinker, D. An ultraviolet (UV) absorber, E. A light stabilizer, and F. Solvent. These formulations are coated to plastic sub- strates without the substrate first receiving a primer coating or other surface treatment to enhance print receptivity. These coatings provide a high performance, single layer, matte-finish, universal printable plastic media for use with a wide variety of printers and ¾ photocopiers. In one embodiment the single layer matte finish universal printable media is converted to a satin finish universal S printable media by applying a gloss-promoting coating formulation over the single layer matte finish base layer. SELF-PRIMED COATING FORMULATION AND UNIVERSAL, PRINTABLE, PLASTIC MEDIA COATED WITH THE FORMULATION FIELD OF THE INVENTION [0001] This invention relates to coating formulations. In one aspect the invention relates to printable coating formulations while in another aspect, the invention relates to printable coating formulations that can be applied to a wide variety of plastic substrates without the need for a primer. In yet another aspect the invention relates to printable media coated with the formulation. In still another aspect the invention relates to durable, printed media in which the media is coated with the universal, printable formulation prior to printing. BACKGROUND OF THE INVENTION [0002] Untreated plastic film substrates, e.g., polyester, vinyl, nylon cloth, polyethylene, polypropylene, polyimide and the like, are non-absorbent and as such, they are not amenable to receiving and holding print from a thermal transfer printer, inkjet printer, dot matrix printer, laser printer, photocopier, etc. To render these substrates printable, they are typically coated on one side with a formulation that is receptive to the ink/toner with which they will be printed. However, different formulations are typically required for different inks/toners. In other words, a formulation that will receive and hold print from a thermal transfer printer may not receive and hold ink from a laser printer, or a formulation that will receive and hold print from a dot matrix printer may not receive and hold print from a photocopier. [0003] Complicating matters is that in order for the coating formulation to properly adhere to the plastic substrate, typically the substrate must first receive a primer coating, e.g., a coating that will tie the formulation designed to receive and hold the print to the underlying plastic substrate, and different primers are typically required for different substrates. Primers that are effective for polyester substrates may not be effective for vinyl, nylon cloth, polyolefin and/or polyimide. [0004] As such, current printing technology for plastic substrates requires not only designing a coating formulation for a particular type of printer or copier ink, but also designing a primer for a particular plastic substrate. These inefficiencies are best addressed by designing a self-primed coating formulation that will receive and hold print from virtually any type of printer, copier or other device that delivers ink or other print vehicle to a plastic substrate. SUMMARY OF THE INVENTION [0005] In one embodiment the invention is a printable, self-primed coating formulation for plastic substrates. In one embodiment the invention is a plastic substrate coated with the printable, self-primed formulation. In one embodiment the invention is a durable, printed plastic media in which the media comprises a printable, self-primed coating formulation on at least one of its facial surfaces. The coating formulation imparts universal printability, high performance and a matte-finish in a single layer to the plastic media so that it can be used with a wide variety of printers and copiers. Graphic images imparted by printing, photocopying, etc. to plastic media coated with the self-primed formulation of this invention exhibit good durability against abrasion, solvents, humidity, heat aging and weathering. [0006] In one embodiment the invention provides a gloss-promoting coating formulation which converts a single layer matte finish universal printable media to a satin finish universal printable media by applying the gloss-promoting coating formulation over the single layer matte finish base layer. The coated satin finish universal printable media are suitable to print text, images, bar codes and the like with thermal transfer printer, inkjet printer, dot matrix printer, laser printer, photocopier and the like. [0007] In one embodiment the invention is a coating formulation comprising: A. A polyurethane binder, B. An absorptive pigment, C. A crosslinker, D. An ultraviolet (UV) absorber, E. A light stabilizer, and F. Solvent. The UV absorber and light stabilizer are typically paired and used in combination with one another and the combination of UV absorber, light stabilizer and crosslinker impart good durability to graphic images imparted to the coated media. The combination of polyurethane binder and absorptive pigment impart good printability to the coated media. The coating formulation is self-primed which allows it to be applied to a wide variety of substrates, particularly plastic substrates, without the substrate first receiving a primer layer or other surface treatment. The formulation is typically applied as a single layer coating to the plastic media using any conventional coating technique, e.g., wire wound rod, reverse roll, slot die, gravure, spraying, dipping, etc. The plastic media coated with the formulation can be printed or otherwise marked with graphic images on a wide variety of printers and photocopiers, and the graphic images exhibit good durability against abrasion, solvents, humidity, heat aging and weathering. [0008] In one embodiment the invention is coated, plastic media comprising opposing facial surfaces, neither facial surface comprising a primer or having received a surface treatment prior to application of the coating, the coating comprising: A. A polyurethane binder, B. An absorptive pigment, C. A crosslinker, D. An ultraviolet (UV) absorber, E. A light stabilizer, and F. Solvent. [0009] In one embodiment the invention is a coated, plastic media as described above in which the coating further comprises a durable graphic image received from at least one of a thermal transfer printer, inkjet printer, dot matrix printer, laser printer or photocopier. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT [0010] Unless stated to the contrary, implicit from the context, or customary in the art, all parts and percents are based on weight and all test methods are current as of the filing date of this disclosure. For purposes of United States patent practice, the contents of any referenced patent, patent application or publication are incorporated by reference in their entirety (or its equivalent US version is so incorporated by reference) especially with respect to the disclosure of synthetic techniques, definitions (to the extent not inconsistent with any definitions specifically provided in this disclosure), and general knowledge in the art. [0011] The numerical ranges in this disclosure are approximate, and thus may include values outside of the range unless otherwise indicated. Numerical ranges include all values from and including the lower and the upper values, in increments of one unit, provided that there is a separation of at least two units between any lower value and any higher value. As an example, if a compositional, physical or other property, such as, for example, concentration, thickness, etc., is from 100 to 1,000, then all individual values, such as 100, 101, 102, etc., and sub ranges, such as 100 to 144, 155 to 170, 197 to 200, etc., are expressly enumerated.
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